Improvement in pump-plungers



H. H.-TUTTLE. PUMP PLUNGER.

No. `191,271. Patented May 29,1877.

UNITED STATES' 'PATENT Ormea.

HIRAM H. TUTTLE, OF SAN JOS, CALIFORNIA, ASSIGNOR OF ONE-HALF HIS RIGHTTO FREDERIOK'FIELD, OF SAME PLACE.

'IMPROVEMENT IN PUMP-PLUNGERS.

Specification forming part of Letters Patent No. 191,271, dated May29,1877; application tiled April 29, 1876.

To all lwhom it may concern Be it known that I, HIRAM H. TUTTLE, of SanJos, in the county of Santa Clara and State of California, have inventedcertain new and useful Improvements in Double-Acting Pumps; and I dohereby declare that the followingfis a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,making part of this specification, in which- Figure-l is a perspectiveview of one of the box-plungers and its attachments. Fig. 2 is avertical transverse section of my'improved pump, with the parts in aworking position. Fig. 3 is a detail sectional view of one oftheimproved box-plungers, and Fig. 4 a plan view of the metal-bindingvalve-plate and iexible packing. The nature of my invention consists incertain constructions, combinations, and arrangements of parts, ashereinafter described and specifically claimed, whereby certainbeneficial results are attained, as will be presently set forth. j

In the accompanying drawings, A represents a rigid box-plunger, providedwith a plunger-arm, B, andthe valves O O. The box-plunger A is made ofwood or metal in rectangular form, and having its sides rigid from topto bottom, and of a depth equal to about one-third the depth of thepump-cylinder D, as shown in Fig. 2 of the drawings. The upper and lowerside edges of the said box plunger are provided with projecting stripsof suitable packing material, as shown at a, which keep the plungersteady, and free from oscillation, and at the same time isolate thegreater portion of the depth of the box from contact with the sides ofthe chamber in which it moves up and down, and thus while thebox-plunger is steadied and kept from vibrating by its packing-strips,it is caused to work with the least amount of friction. On the top edgeof the box-plunger a flexible cup-shaped packing, b, ot any suitablematerial, is fastened securely. This packing has its outer edge turnedup beyond the top of the box-plunger, so as to present a yieldingsurface for bearing snugly against the inside of the chamber in whichthe boxplunger moves. c is a sheet-metal bindingplate, stamped out of asingle piece of metal, inthe form shown in Fig. 4. This plate titssnugly upon the packing b, and binds it {irmly to the top of thebox-plun ger; and thus the packing is saved from being readily torn fromits seat, and when worn can be removed, and new packing substituted,without unnecessary expense or delay.

It will be seen that by making the box-plunger of a depth correspondingto about onethird the depth of the pump-cylinder, and providing itsupper and lower exterior edges with projecting strips ct' suitablepacking material, so as to leave a space between the strips, and thushave a long portion of the box-plunger out of frictional contact withthe sides of the pump-cylinder, there is little liability ot' thebox-plunger oscillating under strain, and the inconvenience arising fromsuch oscillation avoided, and the amount of frictional contact reduced,so as to lessen the power required for moving the said plunger.

rlhe box-plunger A is divided by a single vertical partition, A', intoseparate compartments, each of which is covered by a valve, O. The.partition A strengthens the boxplunger, so that the sides thereof shallalways be kept rigid. The said partition also breaks the supply ofwater, and divides it equally to each of the compartments.

The valves O are formed together out ot' a single piece ofl leather, d,and upon certain portions of this piece of leather metal plates d areriveted, as at e. The rivets are inserted a little outside of the centerof the width of the plates, so as to allow an easy movement ofthe valvesupward at their hinge, and the breakage of the leather thus prevented.

The hinge portion of the said valves O are fastened to the centralpartition of the boxplunger A by a single metal strip,f, and a cap, g,to which latter one end of the plungerarm B is loosely attached. y rlheplunger-arm B is of ordinary construction, having a sleeve on its upperend, by which it is fastened to the windlass or crank E.

The projecting strips a may be applied to the box-plunger, so as to justsnugly tit the chamber in which the box-plunger moves, as

the cup-leather packing b is mostly relied upon for packing thebox-plunger Water-tight while it is operating, and therefore the dangerof the strips a wearing off by too close a contact is avoided.

The Windlass or crank E is constructed -With crank-arms, so that whenthe pump is in operation, and one plunger-box is discharging water, theother plunger-box will take Water.

Thus there can be one, two, or more plungers operated at will in thisway.

F are braces, of any suitable form and construction, upon which theWindlass or crank E is placed. G is an aperture in the cylinder l),through which water from the box-plunger is discharged into the spout H.The said spout H is made with a bolting-tlange to secure it firmly tothe interior sides of the pumpcylinder D. I are Valves placed over thesupply-passages M at the bottom of the pumpcylinder. These valves areconstructed in the same manner as the valves C of the box-plunger,except that the leather is not united. or formed together with twoplates upon it; but they are separate, there being one independent valvefor each pump-cylinder.

' The bottom of the pump-cylinder. is constructed so as to leave itscenter solid, for the purpose of directing the Water more perfectly toeach of the box-plungers throughthe passages M, as shown. The valves Icorrespond in length to both of the valves G, as the passages M areequal to the compartments in the box-plunger A. K is a space or tank ofany suitable form, placed beneath the pump-cylinder. This space` ortank, is equivalent to the same width and length of the two plungers, sothat when either plunger is in full operation this space or tank is fullof Water, thus supplying each plunger as required. J is a supply-pipe indirect communication with the tank K. The said tank K is secured to thel bottom of the pump immediately under the valves I. By placing the tankunderthe valves I, and both acting with the plunger A, the

'by simply extending the length of the windlass E andA pump-cylinder,and thus it will be seen that as large amount of Water may be pumped asrequired.

I do not claim a box-plunger made with a depending leather packing, nordo I claim a box-plunger having the form shown in the 4patent to JamesR. Mills, No. 36,665, dated October 14, 1862, for a double-acting pump,nor do I claim any part of his construction 5 but What I' doclaim, anddesire to'secure by Letters Patent, is-

1. In a pump, the box-plunger A, of rect-V angular form, divided by asingle partition, A', into compartments, in combination with thesupply-passage M at the base of the pump, substantially as shown anddescribed.

2. The long stili' box-plunger A, having its sides rigid from top tobottom, the said sides having their upper and lower exterior edgesprovided with projecting' strips a, in combination with anupwardly-extended packing, b, substantially as described.

3. The binding-plate c, stamped out of a single piece of metal, in theform shown, in`

combination with the packing b, for the pur.-`

pese set forth.

4.,'Ihe rigid rectangular box-plunger, con` structed with the'projectingstrips a, the yield-- ing packing-strip b, and binding-plate c,substantially as described.

HIRAM HECTOR TTTLE.

Witnesses:

J AMES A. CLAYTON, N. J. SHABTZER.

